Table 1 Cryo-EM and refinement statistics of mono-pilus and tri-pilus

From: Two distinct archaeal type IV pili structures formed by proteins with identical sequence

Parameter

Mono-pilus

Tri-pilus

Data collection and processing

Voltage (kV)

300

300

Electron exposure (e Å−2)

50

50

Pixel size (Å)

1.08

1.08

Particle images (n)

  

Shift (pixel)

6

15

Helical symmetry

Point group

C1

C1

Helical rise (Å)

4.95

15.80

Helical twist (°)

104.80

−39.65

Map resolution (Å)

Map:map FSC (0.143)

3.9

3.5

Model:map FSC (0.5)

4.0

3.6

d99

4.1

3.8

Refinement and Model validation

Ramachandran Favored (%)

98.5

93.8

Ramachandran Outliers (%)

0.0

0

Real Space CC

0.86

0.86

Clashscore

12.2

9.3

Bonds RMSD, length (Å)

0.006

0.005

Bonds RMSD, angles (°)

0.969

0.967

Deposition ID

PDB (model)

8TIF

8TIB

EMDB (map)

EMD-41286

EMD-41283